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Thread: Miles/time?? after sensor replacement, OBDII emissions

  1. #1
    Join Date
    Apr 2003
    Location
    Fairfax VA
    Age
    61
    Posts
    562

    Miles/time?? after sensor replacement, OBDII emissions

    A friends Ox sensor needed replacing. How many miles, or how much time, do we need to drive the car to get enough data to satisfy an OBDII emissions test??

    Thnx

  2. #2
    Join Date
    Feb 2017
    Location
    New Orleans, LA
    Posts
    255
    3 tanks of fuel
    '03 Marauder 300A - 87 Octane Race Tune
    O&E Speed Shop - 2333 Aberdeen St. Kenner, LA
    EFI Calibrator - decipha @ EFIDynoTuning
    http://www.efidynotuning.com/tune.htm

  3. #3
    Join Date
    Sep 2005
    Location
    APPLE VALLEY,CA
    Age
    55
    Posts
    1,043
    Every state is different.
    To turn on the first sensor drive in 5 MPH increments for 30 seconds at a time starting at 25 MPH. You can do that in 30 minutes. In CA they saw cars coming in without sensor 2 on yet. Like mine after changing the tune. So they made that part of the smog test.
    That can take from 100 miles to 500 miles to reset. My silver took almost 400 miles to finally turn on. My black I drove for 2 weeks before getting its smog test. Hope that helps.


    Sent from my iPhone using Tapatalk

  4. #4
    Join Date
    Apr 2003
    Location
    Fairfax VA
    Age
    61
    Posts
    562
    Thnx all..

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